Now showing items 600-619 of 619

    • Water sample viral contamination detection system 

      Center for Innovative Technology; Virginia Polytechnic Institute and State University; Virginia Tech Intellectual Properties, Inc.; Ijzerman, M. Marian; Hagedorn, Charles; Falkinham, III, Joseph O. (United States Patent and Trademark Office, 1996-06-18)
      Viral contamination in water samples is detected using a medium which includes both a substrate for .beta.-galactosidase and E. coli with elevated levels of intracellular .beta.-galactosidase. The substrate is chosen to ...
    • Water soluble analogs and prodrugs of taxol 

      Virginia Tech Intellectual Properties, Inc.; Kingston, David G.; Liang, Jingyu (United States Patent and Trademark Office, 1995-05-02)
      Substituted 2'-benzoyl and 2', 7-dibenzoyl taxol derivatives are synthesized which have improved water solubility and stability while maintaining bioactivity. In a preferred embodiment, taxol 2',7-di(sodium 1,2-benzenedi ...
    • Water soluble derivatives of taxol 

      Virginia Tech Intellectual Properties, Inc.; Kingston, David G.; Zhao, Zhi-Yang (United States Patent and Trademark Office, 1991-10-22)
      Sulfonated 2'-acryloyltaxol and sulfonated 2'-O-acyl acid taxol derivatives are synthesized which have improved water solubility and stability while maintaining bio-activity. In particular, 2'-[(3-sulfo-1-oxopropyl)oxy]taxol ...
    • Water soluble derivatives of taxol 

      Virginia Tech Intellectual Properties, Inc.; Kingston, David G.; Zhao, Zhi-Yang (United States Patent and Trademark Office, 1994-10-04)
      Sulfonated 2'-acryloyltaxol and sulfonated 2'-O-acyl acid taxol derivatives are synthesized which have improved water solubility and stability while maintaining bio-activity. In particular, 2'-[(3-sulfo-1-oxopropyl)oxy]taxol ...
    • Water soluble derivatives of taxol 

      Virginia Tech Intellectual Properties, Inc.; Kingston, David G.; Zhao, Zhi-Yang (United States Patent and Trademark Office, 1994-01-11)
      Sulfonated 2'-acryloyltaxol and sulfonated 2'-O-acyl acid taxol derivatives are synthesized which have improved water solubility and stability while maintaining bioactivity. In particular, 2'-[(3-sulfo-1-oxopropyl)oxy]taxol ...
    • Wear reducing compositions and methods for their use 

      Virginia Tech Intellectual Properties, Inc.; Kajdas, Czeslaw; Furey, Michael J. (United States Patent and Trademark Office, 1999-03-09)
      Compositions for reducing wear and friction of rubbing surfaces including mixtures of a cyclic amide and a monoester formed by reacting a dicarboxylic acid and a polyol in substantially equimolar amounts where the dicarboxylic ...
    • Wear reduction using cyclic amide compounds 

      Virginia Tech Intellectual Properties, Inc.; Kajdas, Czeslaw; Furey, Michael J. (United States Patent and Trademark Office, 1998-12-22)
      Method of reducing wear between rubbing surfaces by contacting a surface of a solid material with a cyclic amide before and/or while it is being rubbed against another surface.
    • Wetlay process for manufacture of highly-oriented fibrous mats 

      Virginia Tech Foundation, Inc.; Scheinberg, Stephen P. (United States Patent and Trademark Office, 2002-09-17)
      A mat containing highly machine direction oriented (90% or greater), discontinuous reinforcement fibers, is produced on inclined wire or rotary paper making machinery. Fibers are first uniformly dispersed in an aqueous ...
    • Wide scanning spherical antenna 

      Center for Innovative Technology; Virginia Polytechnic Institute and State University; Virginia Tech Intellectual Properties, Inc.; Shen, Bing W.; Stutzman, Warren L. (United States Patent and Trademark Office, 1995-10-17)
      A novel method for calculating the surface shapes for subreflectors in a suboptic assembly of a tri-reflector spherical antenna system is introduced, modeled from a generalization of Galindo-Israel's method of solving ...
    • Wideband compact planar inverted-F antenna 

      Virginia Tech Intellectual Properties, Inc.; Stutzman, Warren L.; Huynh, Minh-Chau (United States Patent and Trademark Office, 2004-09-21)
      An improved low profile antenna of the PIPA style is formed from a single piece of useful conductive material and includes a first plate spaced apart from an elongated ground plate. The first and ground plates are ...
    • Wideband compact planar inverted-F antenna 

      Virginia Tech Intellectual Properties, Inc.; Stutzman, Warren L.; Huynh, Minh-Chau (United States Patent and Trademark Office, 2011-09-06)
      An improved low profile antenna of the PIPAPIFA style is formed from a single piece of useful conductive material and includes a first plate spaced apart from an elongated ground plate. The first and ground plates are ...
    • Wireless communication device using time-variant antenna module 

      Virginia Tech Intellectual Properties, Inc.; Intel Corporation; Suh, Seong-Youp; Kesling, W. Dawson; Manteghi, Majid; Salehi, Mohsen Amini; Skinner, Harry G. (United States Patent and Trademark Office, 2016-05-24)
      Embodiments of the present disclosure describe methods, apparatuses, and systems related to a wireless communication device using time-variant antenna. Other embodiments may be described and/or claimed.
    • Wireless communication device using time-variant antenna module 

      Virginia Tech Intellectual Properties, Inc.; Intel Corporation; Suh, Seong-Youp; Kesling, W. Dawson; Manteghi, Majid; Salehi, Mohsen Amini; Skinner, Harry G. (United States Patent and Trademark Office, 2017-07-11)
      Embodiments of the present disclosure describe methods, apparatuses, and systems related to a wireless communication device using time-variant antenna. Other embodiments may be described and/or claimed.
    • Wireless communication device using time-variant antenna module 

      Virginia Tech Intellectual Properties, Inc.; Intel Corporation; Suh, Seong-Youp; Kesling, W. Dawson; Manteghi, Majid; Salehi, Mohsen Amini; Skinner, Harry G. (United States Patent and Trademark Office, 2018-07-31)
      Embodiments of the present disclosure describe methods, apparatuses, and systems related to a wireless communication device using time-variant antenna. Other embodiments may be described and/or claimed.
    • Wires on demand: run-time communication synthesis for reconfigurable computing 

      Virginia Tech Intellectual Properties, Inc.; Athanas, Peter M.; Patterson, Cameron D.; Dunham, Timothy G.; Bowen, John K.; Rice, Justin D.; Shelburne, Matthew T.; Pletri, Jorge Suris; Graf, Jonathan P. (United States Patent and Trademark Office, 2011-03-08)
      A method, and system, for reconfiguring an FPGA which has a static region and a dynamic region is provided. The method includes the steps of: (a) providing a dynamic module library having information of predetermined ...
    • Worm-hole run-time reconfigurable processor field programmable gate array (FPGA) 

      Virginia Tech Intellectual Properties, Inc.; Athanas, Peter M.; Bittner, Jr., Ray A. (United States Patent and Trademark Office, 1998-10-27)
      Higher performance is gained through a new architecture which implements a new method of computational resource allocation, utilization and programming based on the concept of Worm-hole Run-Time Reconfiguration (RTR). A ...
    • Zero voltage zero current three level DC-DC converter 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Canales-Abarca, Francisco; Barbosa, Peter M. (United States Patent and Trademark Office, 2002-02-19)
      A three-level DC-to-DC converter is provided having zero-voltage and zero-current switching (ZVZCS). A flying capacitor is provided on the primary side of the converter to achieve zero voltage switching (ZVS). In addition, ...
    • Zero-current transition PWM converters 

      Center for Innovative Technology; Intellectual Properties | Kft; Virginia Polytechnic Institute and State University; Lee, Fred C.; Hua, Guichao C. (United States Patent and Trademark Office, 1996-01-23)
      A zero-current transition pulse-width modulated (ZCT-PWM) d.c.-d.c. converter allows minority-carrier semiconductor devices such as, for example, bipolar junction transistors (BJTs), insulated gate bipolar transistors ...
    • Zero-voltage-switched multi-resonant converters including the buck and forward type 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Tabisz, Wojciech A. (United States Patent and Trademark Office, 1989-08-15)
      A multi-resonant-switching network that operates under switching conditions that are favorable to both the active switch and the diode that constitute the switch. In a zero-current multi-resonant switch, the resonant circuit ...
    • Zero-voltage-transition (ZVT) 3-phase PWM voltage link converters 

      Center for Innovative Technology; Virginia Polytechnic Institute and State University; Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Mao, Hengchun (United States Patent and Trademark Office, 1996-11-12)
      An improved zero voltage transition (ZVT) pulse width modulation (PWM) link converter is provided which introduces a space vector modulation scheme and an auxiliary circuit which includes a commutation power supply or ...